Re: 0-200, Cessna 150 STC The conversion was the EAA STC and was done within days of the EAA getting approval for the STC. I no longer have the 150 or copies of the paperwork, so I can't help you with the numbers. My carb float "sunk" after a few months requiring a metal replacement. Re: Marvel Mystery Oil When I purchased the 150 it had not been flown for a few years and had 2100 hours since overhaul, so I had to get a ferry permit to get it home. The compression would not come up to specs during approx. 10 hours of flying. I then put MMO in the sump and gas tank. After 1 hour of flight the compression came up well within specs and stayed there for the 200hrs that I flew the craft. After that I only put MMO in the oil . Not a good scientific test of MMO, but it made a believer of me. Dick Hartwig
